Help with CA, paralax and Barrel Distortion

RB
Posted By
Rich Bail
Jan 6, 2004
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394
Replies
9
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What are the best procedures to eliminate Barrel Distortion (or Pincushion distortion), Chromatic Aberration and Parallax?

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S
Stephan
Jan 6, 2004
"Rich Bail" wrote in message
What are the best procedures to eliminate Barrel Distortion (or Pincushion distortion), Chromatic Aberration and Parallax?
Buying a proper lens would be the first one
Then there is a plugin (did I say plugin?) called LensDoc. http://www.andromeda.com/info/lensdoc.html that takes care of most barrels and pincushions.
It can also work out some parallax problems if not too acute. Chromatic aberrations come in too many different variations.

Stephan
WS
Warren Sarle
Jan 6, 2004
"Stephan" wrote in message
"Rich Bail" wrote in message
What are the best procedures to eliminate Barrel Distortion (or
Pincushion
distortion), Chromatic Aberration and Parallax?

What do you mean by parallax? Traditionally, it refers to the fact the view as seen through a non-TTL viewfinder is not the same as the image on film, especially for close-ups, but there’s not much you can do about that after the fact.

Buying a proper lens would be the first one

All lenses distort.

Then there is a plugin (did I say plugin?) called LensDoc. http://www.andromeda.com/info/lensdoc.html that takes care of most barrels and pincushions.

Debarrelizer is much easier to use and cheaper:
http://www.theimagingfactory.com/

Chromatic aberrations come in too many different variations.

Debarrelizer also helps with some common forms of chromatic aberration. Other plug-ins can be found via Google.
RF
Robert Feinman
Jan 6, 2004
In article <HqoKb.39028$>,
says…
What are the best procedures to eliminate Barrel Distortion (or Pincushion distortion), Chromatic Aberration and Parallax?
The free program panorama tools has plugins that will fix lens distortions as well as alter perspective and point of view. Do a google search to find a site currently hosting it.


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G
Glenn
Jan 6, 2004
"Stephan" wrote in message
"Rich Bail" wrote in message
What are the best procedures to eliminate Barrel Distortion (or
Pincushion
distortion), Chromatic Aberration and Parallax?
Buying a proper lens would be the first one

That is what I was thinking … correct at the source of the problem.

Then there is a plugin (did I say plugin?) called LensDoc. http://www.andromeda.com/info/lensdoc.html that takes care of most barrels and pincushions.
It can also work out some parallax problems if not too acute. Chromatic aberrations come in too many different variations.
Stephan

S
Stephan
Jan 6, 2004
"Warren Sarle" wrote in message
"Stephan" wrote in message
Debarrelizer also helps with some common forms of chromatic aberration. Other plug-ins can be found via Google.
How does Debarrelizer help with chromatic aberration??

Stephan
J
Jim
Jan 6, 2004
Yes, but some lenses distort much more than others.
"Warren Sarle" wrote in message
All lenses distort.
WS
Warren Sarle
Jan 7, 2004
"Stephan" wrote in message
"Warren Sarle" wrote in message
"Stephan" wrote in message
Debarrelizer also helps with some common forms of chromatic aberration. Other plug-ins can be found via Google.
How does Debarrelizer help with chromatic aberration??

It can transform each channel separately.
F
Florian
Jan 18, 2004
Hi,

I recently wrote such a plugin, you’ll find it at:

http://flofiltres.free.fr/UnDistort

It corrects pincushion/barrel distortions, lateral chromatic aberration and perspective (I suppose that’s what you’re looking for). Unlike the free Panorama Tools, it’s a shareware.

Florian.

Rich Bail wrote:
What are the best procedures to eliminate Barrel Distortion (or Pincushion distortion), Chromatic Aberration and Parallax?
F
Florian
Jan 18, 2004
Euh, that was an incorrect address. Here is the correct one:

http://flofilters.free.fr/UnDistort

Florian wrote:
Hi,

I recently wrote such a plugin, you’ll find it at:

http://flofiltres.free.fr/UnDistort

It corrects pincushion/barrel distortions, lateral chromatic aberration and perspective (I suppose that’s what you’re looking for). Unlike the free Panorama Tools, it’s a shareware.

Florian.

Rich Bail wrote:
What are the best procedures to eliminate Barrel Distortion (or Pincushion distortion), Chromatic Aberration and Parallax?

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